Windmill



3 Sheets-Sheet 1.

(No Model.)

A. J. GORCORAN.

WINDMILL.

Patented Aug. '7, 1888.

(No Model.) 3 Sheets-Sheet 2.

' A. J. OOROORAN.

WINDMILL.

No. 387,212. Patented Aug. '7, 1888. 8

"Will" YIN/ENTOR fi fim 3 Sheets-Sheet 3.

(N0 MOdel.)

A. J. OOROORAN.

WINDMILL.

Patented Aug. '7', 1888.

Irv/2:13:01,

WEI- 5525. u /MW UNTTnn STATns FFlQE.

ATENT WlNDMILL.

SPECIPICATIQN forming part of Letters Patent No. 387,212, dated August'7, 18188.

(No model.)

To aZZ whom it may concern:

Be it known that 1, ANDREW J. CORCORAN, a citizen of the United States,residing at Jersey City, in the county of. Hudson and State of NewJersey, have invented certain new and useful Improvements in WVindmills;and I do hereby declare the following to be a full, clear, and exactdescription of the same, reference being bad to the accompanyingdrawings, whichform a part of this specification.

This invention relates to certain new and useful improvementsinwindmills, and has for its object to provide a windmill thatwill be bothstrong and light in construction, and be capable of resisting the forceof the wind without liability of the parts becoming disarranged orbroken; and it consists in the construction and arrangement of partshereinafter described, and then specifically pointed out in the claims,due reference being had to the accompanying drawings, forming a part ofthis specification, wherein- Figure 1 is a front elevation of myimproved windmill, a portion only of the blades being shown; Fig. 2, avertical central section of a portion thereof; Fig. 3, a top view of oneof the clips employed for securing together one of the radial arms andtwo of the section-bars and adjustably holding one end of one of thestay-rods; Fig. 4, a vertical central section thereof; Fig. 5, a topview of a clip employed for securing the outer section-bars to theradial arms; Fig. 6, a vertical central section thereof; Figs. 7 and S,perspective views of said clip; Figs. 9 and 10, perspective views of theclip shown in Figs. 3 and 4; Fig. 11, an end view of the clip shown inFigs. 5, 6, 7, and 8; and Fig. 12, a detail View showing how the radialarms and the ends of the section-bars are joined together. Fig. 13 is anenlarged detail view of the boss K and the ends of the stay-rods H,fastened thereto; and Fig. 11 is a section on the line 00 m, Fig. 2,looking from the center of the wheel outward.

Referring to the drawings, the letter A denotes the wheel-shaft; B, thespider; O, the radial arms; D D, the sect-ionbars, and E the bladessecured to the section-bars in the usual manner. The spider B is mountedupon the wheel-shaft, as usual, and consists of two an nular flanges orhubs bolted together, and between which are secured the inner ends ofthe radial arms 0. For the purpose of affording additional strength tothe wheel, I bolt to the radial arms, near the spider, an annularcollar, F.

Gr indicates the clip for securing together the radial arms and theinner section-bars. As more clearly shown in Figs. 3, 4, 9, and 10, thisclip consists of a casting having a base or web, 9, from each side ofwhich rise arms g g, which are bridged over at the top by the cap 9 Thisconstruction forms a rectangular opening in the casting, through whichpasses one of the radial arms 0 of the wheel. The base or web 5/ of thecasting is provided upon each side with lugsgg from which rise flanges gg, as more clearly shown in Fig. 10, which, in connection with the capreceive and support the ends of the section-bars D. From the cap g ofthe casting rises an ear, having an inclined perforation, g, for thereception of one end of the stay-rod H, and said ear 9 is provided withascrewthreaded perforation, 9 at a right angle to the perforation g",which receives a set-screw, g, which is adapted to be screwed downuponthe stay-rod H and hold the same tightlyin place. All of theabovementioned parts of the casting excepting the set screw 9 are castintegral.

In assembling the parts above described the radial arms 0 are firstfirmly secured in place between the hubs composing the spider B andbolted in place,and the annular collar F bolted to said arms. The clipsG are next slipped onto the radial arms, and the section-bars D placedin position between the radial arms, the ends of the section-bars beingrabbeted to receive the radial arms, as shown in Fig. 12. The clips Gare now forced up into place till the ends of the sectionbars D areclosely embraced by the clips, as shown in the drawings. The clips arethen secured in place by bolts 1 1, which pass through bolt-holes in theweb of the clip and through holes bored in the radial arms, and arefastened by means of nuts.

It will be seen that the radial arms and the seetionbars are closelyunited by means of the clips G without the use of fastenings other thanthe bolts 1 1, and will effectually resist both the force of the windand that exerted by centrifugal motion resulting from the rapid rotationof the wheel.

I indicates the clip employed for uniting the outer section-bars, D D,to the radial arms 0. As shown in Figs. 5, 6, 7, 8, and 11, this clip iscomposed of a casting having a fiat web or bottom, i, of the shape shownin Fig. 8, from which rises a V-shaped flange, of a shape to embrace thesides of the meeting ends of the section-bars D D, and said web '5 isalso pro vided upon each side with a flange, i, to em brace the sides ofthe radial arm 0. In connection with this clip I, I employ a slightlyV-shaped strut, i said strut being provided at each end with asuitablebolt-hole, the web 2' of the clip I being provided with twocorresponding boltholes and two other boltholes adapted to register withtwo bolt-holes in the radial arm 0, as will hereinafter appear. TheV-shaped flange i of the clip I is provided with a rectangular apertureextending upwardly from the web 2', as shown, of a size and shape toadmit the passage of the radial arm 0.

In uniting the section-bars D D to the radial arm (3, the said sectionbars are first placed in position, their ends being rabbeted to receivethe radial arms similarly to the section-bars D, before described,andthe clips are neXt forced inwardly over the radial arms until theV-shaped tlanges i closely embrace the ends of the sectionbars. The clipis then secured in place by means of bolts 2 2, which are passed throughbolt-holes in the web 1' of the clip and through corresponding holesmade in the radial arm, and fastened by means of nuts. The strut is nextplaced on top of the meeting ends of the section-bars D D, asshown inFigs. 5 and 7, and secured in place by means of bolts 3 3, which passthrough bolt-holes in the ends of the strut and through correspond ingbolt-holes made in the section-bars and in the web 2' of the clip, thebolts being fastened by means of nuts.

The stay-bars H are secured in place as follows: Upon the outer end ofthe wheel-shaft A is mounted an annular boss, K, within or to which aresecured in any suitable manner the inner ends of the stay-bars H. Theouter ends of said stay-bars are passed through the inclinedperforationsg of the clips G, and are adjustably held therein by meansof the setscrews 9 The stay-bars are preferably thus secured in place atthe same time the clips G are bolted in position. By fastening the outerends of the stay-rods H adjustablyin place any Warping or shrinking ofthe wheel which may occur from time to time may be compensated for.

Having thus described my invention, what I claim is-- 1. In a windmill,the combination, with the wheel'shaft, the radial arms, section-bars,and stay-rods, of a clip for securing said arms and section-barstogether, provided with an adj ustable holding device,substantiall y asdescribed, for securing the ends of the stay-rods.

2. The clip G, for securing the section-bars to the radial arms,comprising a web, 5 arms g g, cap 9 lugs g and vertical fiangesgg, thesaid clip adapted to he slipped over the radial arms and embrace theends of the section-barsand fastened in place upon the radial arms bybolts, substantially as shown and described.

3. The clip G, for securing the section-bars to the radial arms,comprising a web, 9, arms 9 9, cap 9 lugs g g, and vertical flanges g g,and provided with a perforated lug for the reception of the stay-rod,and a set screw for adjustably securing the stay-rod in place,substantially as shown and described.

4. The clip I, for securing together the radial arms and thesection-bars, consisting of a web, t, a V-shaped flange, and a strut,ifithe \l-shaped flange i being provided with an aperture for thereception of the radial arm, the whole being secured in place by meansof bolts, substantially in the manner shown and described.

5. The clip I, for securing together the radial arms and thesection-bars, consisting of a web, 6, a V-shapedflange, 71, sideflangesfl, and a strut, i, the V-shaped flange '5 being provided with anaperture for the reception of the radial arm, the whole being secured inplace by means of bolts, substantially in the manner shown anddescribed.

6. In a windmill, the combination, with the,

wheelshaft A, the annular boss K, mounted on the outer end thereof, theradial arms 0, se cured to the shaft by means of the spider B, andbraced by the annular collar F, bolted to said arms, the section-bars D,and the stay rods H, secured at their inner ends to the annular boss Kand adj ustably secured at their outer ends to the radial arms 0, allconstructed and arranged substantially as shown and described.

In witness whereof I have hereunto subscribed my name.

ANDREW J. CORCORAN. \Vitnesses:

GEO. H. SoNNEBoRN, GEO. D. EATON.

